Protector for safety fuse-caps.



T. M. DANIELS. PROTBGTOB PoR SAFETY FUSE UAPS.

APPLICATION FILED JAILZ-, 1910.

Patented Aug. 2, 1910.

ATTORNEYS ;'HE Nokms Perses ca., wAsN/NcraN, n. c.

THOMAS MARION DANIELS, 0F CHICAGO,

colvrrAN-Y, or CHICAGO, ILLrNo ILLINOIS, ASSIGNOR T0 SAFETY FUSE CAP IS,A CORPORATION OE ILLINOIS.

PROTECTOR: EUR SAFETY FUSE-CAPS.

Specicaton of Letters, Patent.

Patented Aug. 2, 1910.

Application f iled January 25, 1910. Serial No. 540,058.

T0 all when it; may Centern:

Be it known that I, TrroMAs MARION DANInLs, a citizen of the UnitedStates, and a resident of Chicago, in the county of Cook and State ofIllinois, have invented a new and Improved Protector for SafetyFuse-Caps, of which the following is a full, clear, and exactdescription.

This invention relates to certain improvements in connection with fusecaps commonly employed in igniting explosive charges, and the object ofthe invention is to provide means for securing the cap to the fuse, sothat the detonating charge will be protected against moisture, andwithout necessitating the crimping, ing of a portion of the cap. In myimproved construction, there are no projecting parts which can vinjurethe fuse, and the seal around the upper part of the cap` is renderedperfectly water-proof. The liability of misliring is reduced, andthereliability of the cap thus increased.

Reference is to be had to the accompanying drawings, forming a part ofthis specication, in which similar characters of reference indicatecorresponding parts in all the figures, and lin which- Figure l is aside elevation of my improved cap protector, the fuse and cap beingillustrated as removed from the protector; Fig. 2 is a longitudinalsection through the protector; and Fig. 3 is a longitudinal section in aplane at right angles to the plane of Fig. 2, and showing the cap andfuse in position.

My improved protector is adapted for use in connection with any suitableform of cap and fuse. I have illustrated a cap 10, which is cylindricalin form and closely receives and ts a fuse 11. Within the lower portionof the cap, is the ordinary detonating charge which is ignited by thefuse.

One of the main objects of my invention is to prevent moisture fromgaining access to the detonating charge by passing into the cap alongthe outer surface of the fuse. In order to prevent the access of suchmoisture, I provide a sleeve 12, of rubber or other suitable resilientwater-proof material, said sleeve being of a size to lit the exterior ofthe cap, and of such length as to extend along the cap for a shortdistance from the open end ofthe latter, and along the outer slitting orfoldj tric with surface of the fuse for a short distance from the end ofthe cap.v

For holding the sleeve 12 in position, I provide a protector which ispreferably formed from a piece of sheet metal. This protector has acentral or end portion 13, for engagement with the end of the cap, toinsure the proper positioning of the protector, and at opposite sides ofsaid end are two arms or extensions 14. These arms or extensions arebent to lie adjacent the outer surface of the cap and fuse, and arecurved laterally,

the outer surface of the fuse and cap.

Each arm or extension is subdivided into i two prongs or branches 15,and these four prongs or branches are spaced substantially equi-distantabout the periphery of the fuse. Each prong or branch has aninwardly-ex- 1 tending spur or tooth 16, stamped therefrom intermediateits ends, and these spurs or teeth are extended into the sleeve 12, soas i to insure, the

proper positioning of the latter, and to prevent any displacement of thesleeve after the protector is secured in position. Encircling thebranches or prongs is a slidable outer metal sleeve 17 of such size thatwhen moved lengthwise of the pro'- tector, it will force the branches orprongs inwardly and compress the rubber sleeve 12 into firm engagementwith the cap and fuse adjacent the meeting lines of the latter.

For preventing the sleeve 17 from sliding off the upper end of theprotector, the ends of the prongs or branches may be bent outwardly toform terminal anges 18, as illustrated in the drawings.

In securing the protector in position, the cap and fuse are insertedthrough the sleeve 12 until the end of the cap engages with the end 13of the protector. By moving the sleeve 17 lengthwise to the in Fig. 3,the rubber sleeve 12 will be compressed and the interior of the caprendered water-proof.

For holding the sleeve 17 in its operative position and compressing theinner rubber sleeve, the prongs or branches 15 may have projectionsthereon, normally tending to prevent the longitudinal movement of theouter sleeve 17. As shown, each prong has two beads 19 and 20, which arein the form of circumferential corrugations. The sleeve position shownso as to lie substantially concen- Y may slip over these corrugationsinto the space between them and will then be effectively held againstaccidental displacement.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

l. A fuse cap protector having a packing sleeve adapted to encircle thecap and the fuse adjacent the open end of the former, and means forcompressing said sleeve.

2. A fuse cap protector having a packing sleeve adapted to encircle thecap adjacent the open end of the latter, and means encircling said capand carrying said sleeve and insuring the proper positioning thereof.

3. A fuse cap protector having a packing sleeve adapted to encircle thecap adjacent the open end of the latter, means carrying said sleeve andinsuring the proper positioning thereof, and means for compressing saidsleeve.

4. A fuse cap protector having a packing sleeve adapted to encircle thecap adjacent the open end of the latter, means carrying said sleeve andinsuring the proper positioning thereof, and an outer slidable sleevefor compressing said first-mentioned sleeve.

5. A fuse cap protector adapted to encircle the cap adjacent the openend of the latter and including a resilient packing, and means forcompressing the packing.

6. In combination, a cap, a fuse extending thereinto, a rubber sleevehaving one end portion encircling the cap and the other end portionencircling the fuse and terminating beyond the end of the cap into whichthe fuse is inserted, and a protector encircling said sleeve forinsuring the positioning of the latter.

7. A fuse cap protector, including an end member adapted to engage withthe end of the cap, a plurality of branches extending lengthwise of thecap, and a packing carried by said branches and adapted to engage withthe cap adjacent the end of the cap into which the fuse is inserted.

8. A fuse cap protector, including an end member adapted to engage withthe end of the cap, a plurality of branches extending lengthwise of thecap, a packing carried by said branches and adapted to engage with thecap adjacent the end of the cap into which the fuse is inserted, andmeans for engaging with said branches to compress said packing.

9. A fuse cap protector, including an end member adapted to engage withthe end of the cap, a plurality of branches extending lengthwise of thecap, a packing carried by said branches and adapted to engage with thecap adjacent the end of the cap into which the fuse is inserted, and anouter slidable sleeve for engaging with said branches to compress saidpacking.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

THOMAS MARION DANIELS.

Witnesses:

Jnssn E. ROBERTS, RosooE L. ROBERTS.

